Colorectal Cancer Goes Younger: Nearly Half of New Cases Are Under 65
New American Cancer Society data show nearly half of colorectal cancers now occur in adults under 65, with rising cases in ages 50–64 and a notable increase in rectal cancer, likely reflecting a birth-cohort effect and environmental influences; experts emphasize paying attention to symptoms and that screening for average risk starts at age 45, while treatment varies by stage and may involve surgery, chemotherapy, and radiation for rectal cancer.